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Intangibles - Additional Information (Detail)
12 Months Ended
Dec. 31, 2015
Minimum [Member]  
Finite Lived Intangible Assets [Line Items]  
Estimated useful lives of identified intangible assets 1 year
Maximum [Member]  
Finite Lived Intangible Assets [Line Items]  
Estimated useful lives of identified intangible assets 20 years